I didn't do a proper bisect, but I have a variety of mainline kernels from the mainline PPA I tried.
v3.16 works properly v3.17 some rc's are using ps2 mode due to some i2c failure, others work properly v3.18 works properly v3.19-rc1 fails v3.19-rc5 fails v3.19-rc6 fails Whenever someone does a proper bisect, make sure that i2c-hid is loaded and in use. it might help to blacklist psmouse to ensure that it doesn't fall back to psmouse in case of a different failure. There is a different problem with psmouse that is not this bug. Also, make sure that you are NOT booted with acpi_osi="!Windows 2013". This will cause the touchpad to only run in PS2 mode. The problem is specific to I2C mode. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-input-synaptics in Ubuntu. https://bugs.launchpad.net/bugs/1416601 Title: touchpad does not respond to tap-to-clicks in I2C mode in Ubuntu 15.04 on 2015 XPS 13 (9343) To manage notifications about this bug go to: https://bugs.launchpad.net/dell-sputnik/+bug/1416601/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp